tracing: Add internal ftrace trace_puts() for ftrace to use
There's a few places that ftrace uses trace_printk() for internal
use, but this requires context (normal, softirq, irq, NMI) buffers
to keep things lockless. But the trace_puts() does not, as it can
write the string directly into the ring buffer. Make a internal helper
for trace_puts() and have the internal functions use that.
This way the extra context buffers are not used.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 5043a0c..d372c65 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -443,16 +443,16 @@
unsigned long flags;
if (!tr->allocated_snapshot) {
- trace_printk("*** SNAPSHOT NOT ALLOCATED ***\n");
- trace_printk("*** stopping trace here! ***\n");
+ internal_trace_puts("*** SNAPSHOT NOT ALLOCATED ***\n");
+ internal_trace_puts("*** stopping trace here! ***\n");
tracing_off();
return;
}
/* Note, snapshot can not be used when the tracer uses it */
if (tracer->use_max_tr) {
- trace_printk("*** LATENCY TRACER ACTIVE ***\n");
- trace_printk("*** Can not use snapshot (sorry) ***\n");
+ internal_trace_puts("*** LATENCY TRACER ACTIVE ***\n");
+ internal_trace_puts("*** Can not use snapshot (sorry) ***\n");
return;
}
